Gear-transmission mechanism for automobiles.



I I ZJQZZZJ/L-QZJ E. J. GULICK.

GEAR TRANSMISSION MECHANISM FOR AUTOMOBILES.

APPLICATION FILED AUG.15. 1907 923,044. Patented May 25, 1909.

3 SHEETSSHEET 1.

fWM/ MLM E. J. GULIGK.

GEAR TRANSMISSION MECHANISM FOR AUTOMOBILES.

APPLICATION FILED AUG. 15, 1907.

3 sums-smmd.

- Patented May 25, 1909.

Index? 2%)? ffi'fizawrew E. J. GULIGK.

GEAR TRANSMISSION MECHANISM FOR AUTOMOBILES.

APPLICATION FILED AUG. 15, 1907.

Wm 7 mm 0, mp 4 M d W mm 3% m r 11 J m Q W a, M Q 4 w M 4 J 1 w ya EDWARD J. GULIOK, or MISHAWAKA, INDIANA.

' GEAR-TRANSMISSION MECHANISM FOR AUTOMOBILES.

To all whom it may concern:

Be it known that I, EDWARD J GULIOK, a citizen of the United States, residing at- Mishawaka, in the county of St. Joseph and State of Indiana, have invented certain new and useful Improvements in Gear- Transmission Mechanisms for Automobiles,

ofwhich the following is a specification.

, Myinvention concerns improvements in the'speed changing and transmission gearing of a motor'vehicle, in the manner of noncontrolling mechanism for operating the i a part of this specification, I have illustrated Topcratioirof the gears.

casing the three parts of which are characterized 10, 11 and 1 on the drawing. The

of aspur gear 18. i on the hub 21 of gear 18 by a nut 19, the two gears being compelled to rotate together by adjustably mounting the parts in an inclos- 'ing orhousing casing, in the provision of a single controlling means for actuating the firstspeed and reverse gears, and a single secondand third speed gears, and in means for'interlocking the controllers for the gears i to positively prevent the throwing of more 1; than one into operation at a time.

On the accompanying drawings, forming my preferred embodimentof the invention, like reference characters referring to the same parts in all the views.

Figure 1 is a horizontal section through the gearing and its casing of an automobile;

Fig. 1; Fig. 3 is a vertical cross-sectionon casing illustrating the means for locking the sliding controlling rods governing the The gearing is inclosed in a three-part companion sections 13 and 14 of the divided 5 rear axle are. connected together by differ-Q jential gearing inclosed in the rotaryecasing i or box 15 to which is bolted a bevel gear 16,

theteeth of which mesh with those of a 1 bevel pinion 17 disposed on the hollow hub Gear 17 is held firmly the key or spline 20 between gear 1 and the I hub. 'The lnner end of the hub 21of gear 18 is equi ped with a ball bearing 22 located in a'circu ar recess 23 in an internal wall 24 of the part 10 of the inclosing housing.

. tratedr -Between the gears 17 and 18 hub I The ballbearing rests against a circular" shoulder 25in the recess, as is clearly illus- Specification of Letters Patent.

Application filed August 16,

' thrust from shaft 31.

Patented May 25, 1909.

1907. Serial No. 388,665.

21 has a ball bearing 26 located inside of a" sleeveor bushing 27 screw-threaded in the transverse wall 28 of the casing. Bushing or sleeve 27 as is illustrated, has an inwardly-extended circular flange 29 hearing against the ball bearing, and an outwardlyextended flange 30 adapted to bear against one face of wall 28 of the casing. It is obvious, therefore, that the gears 17 and 18 E and their bearings are non-adjustably maintained inposition. The device is also supplied with a driving shaft 31 having at its f inner end a ball bearing 32 located within.

gear 18 and having a radial bearing only in gear 18. Bearing 32 is rigidly secured to the reduced end 37 of shaft 31 by a nut 32,

and there is no endwise hearing or thrust of any part against gear 18. The outer-end of shaft 31- is supplied with a ball bearing 33 5 within a contracted neck 34 of the part 12 0f the casing and all of the end thrust of shaft 31 is taken up by the ball bearing 33, one side of the outer race 33 of which abuts against acircular inwardly-extended shoulder 35. integral with the casing neck 34.. The end thrust of the'shaft in one direction is borne by this shoulder, while the thrust Fig. 2 is a substantially central longitudinal -verticalsection of the construction shown in 30 line 33 of Fig. 1 as viewed in the direc I tion indicated by the arrows; and Fig. 4 is ,a vertical section through a portion of the in the opposite direction is borne by a threaded ring 36 screwed into the neck 34 solidly against the outer race or track 33 of the ball bearing 33. The inner race 33 of bearing 33 is held rigidly against collar 39 integral with the shaft 31 by a sleeve 40 which 1s screw threaded on to the shaft. One or more felt washers 41 may be interposed between sleeve 40 and nut 36 if desired. It is apparent, therefore, that bearing 32 being secured to the end of shaft 31,

5218 explained, and not hearing endwise against gear 18, the latter will carry the radial load only of shaft 31, and the bearing 33 which is rigidly secured to shaft31 will carry the radial load and also the endwise thrust loads in both directions. The object of this construction is to relieve gear 18 and bearings 22 and 26 from' any end A second shaft 42 is rotatably mounted in the casing parallel to the driving shaft 31 and is supplied at its ends with ball bearings 43 and 44. Keyed to this shaft are three spur gears 45, 46 and 47 of different diameters, the teeth of gear being in constant mesh with the teeth of gear 18.

. On the shaft 31 and splined thereto so as to be rotatable therewith but slidable longitudinally thereof, I mount a spur gear 48 which has at one end a clutch element provided with .teeth 49 adaptedto be slid into and out, of operative relation with the internal clutch teeth 50 of gear 18. When the 1 gear 48 is slid toward the rear axle, the clutch elements 49 and 50 are brought into active relation so that the rotation of the driving shaft 31 is transmitted directly to the gears 18 and 17 and the highest speed secured. hen the gear 48 is slid in the opposite direction its teeth are brought into mesh with those of gear 46 on shaft 42, producing a slower speed.

Splined on the shaft 31 and movable longitudina'lly thereof is a smaller spur gear 51 adapted to be slid into and out of mesh with the gear 47, to produce the slowest forward 1 speed. Integral with the gear 51 is a smaller gear 52, the teeth of which are constantly in mesh with a reverse 'geari53 slidable on a rod 54 suitably mounted in the casing below shaft 31. \Vhen the gears 51 and 52 and the poslte end of the pm into the recess of the reverse gear 53 which travels with them are slid to the right, as viewed in Fig. 1, the gear 51 is brought into mesh with the gear 47, which provides the slowest forward speed of the vehicle. When these gears 51, 52 and 53 are slid inthe opposite direction, the gear 53 being in constant mesh with the gear 52 is brought into mesh with the teeth of gear 47 so that the direction of the travel of the vehicle is reversed.

Gear 53 is mounted on a sleeve or bushing 55 slidable on a rod 54, and has interposed between it and the sleeve a ball bearing 56. In order to slide the ears 51, 52 and 53 simultaneously I provi e an arm 57 which hasa bifurcated end 58 fitted in a groove 59 of the combination-gear 5152. This arm 57 also has a split portion 60 which surrounds the sleeve 55 and is .bound thereto by a bolt or screw 61. .At its opposite end the arm 57 is screw threaded onto a rod 62 slidably mounted in the casing and connected at one end by a link or connecting rod 63 to an operating handle. gages the slot 65 of gear 48 and has a similar screw threaded connection with a rod 66 slidable in the casing, parallel to and above the rod 62. A like connecting rod or link 67 joins the rod 66 to another operating handle. Each. rod on one face has three beveled notches 68 into which may be projected by means of a spring 69 a beveled locking pin 70 to hold the rod and the partsactuated thereby in operative or neutral position. Each rod is notched at 71 on its face adjacent to its other rod, each recess 71 having beveled or inclined faces, as indicated. Suitably mounted and vertically slidable in the casing is a locking pin 72 having its ends oppositely inclined or beveled and adapted to fit in the recesses 71. When the rods are in their neutral position, that is when none of A similar arm 64 en-- the gears controlled thereby are operative, the notches 71 are opposite the locking pin 72, as indicated in F ig. 4, which then fits in the recess 71 of the lower rod 62, due to gravity. If the upper rod 66 is moved so as to throw the gear 48 into mesh with the gear 46 or to throw the two clutch elements 49 and 50 together, an unnotchedportion of the rod is brought over the top end of pin 72 so that it is impossible to slide the lower rod 62 until the upper rod has again beenbrought to neutral position. When the upper rod is in this position the lower rod may be shifted, and as soon as it is moved, owing to the cooperation of the beveled faces of the notch 71 and the locking pin 72, the latter is pushed upwardly into the notch of rod 66, thereby holding the latter from movement as long as the lower rod is displaced from neutral position. If the rods 62 and 66 were in the same horizontal plane, the locking pin would act in substantially the same manner, that is movement of one rod would project the opother rod to hold the same from sliding.

Although I have described in detail my improved construction, it is to be understood that my invention is not limited to the precise structural features shown and described,

but that the details of the device may be .r

varied considerably without departure from the substance. of my invention.

On the accompanying drawings I have illustrated features which form the subject matter of a co-pending patent application.

I claim:

1. In a motor-vehicle, the combination of a driving shaft, a second shaft, a gear on said second shaft, a second gear on said driving shaft adapted to be moved into and out of mesh with said first'mentioned gear, a third gear on said driving shaft and movable with said second gear, a reverse gear in constant mesh with said third gear, and a single controller to throw said second or reverse gears into and out of mesh with said first mentioned gear, substantially as described.

2. In a motonvehicle, the combination of a rotary driving shaft, a second shaft, a gear fixed to and rotatable with said second shaft, a second gear rotatable with said drivin'gshaft and slidable thereon into and out of mesh with said first mentioned gear, a third gear on said drivin with said second gear, a sli ing reverse gear in constant mesh with said third gear, and

a single controller to slide said second third with said first gear, an inclosing casing,

shaft movable bearings for said gears in said casin bearing confinin members having shoul ers co- (slidable t ereon, a bearin I for said driving shaft in said first gear, an a non-adjustable bearing for said driving shaft, substantially as described.

4. In a motor-vehicle, the combination of a pair of gears rigidly fastened together, an inci'osing casing, a pair of non-adjustable ball-bearings for said gears, a drivin shaft,

a non-adjustable ball-bearingfor sai shaft, in one of said gears, and another non-adjustable ball-bearing for said drivin shaft in said casing, substantially as described.

5. In a motor-vehicle, the combination of an inclosing casing, a gear rotatably mounted in said casing, a driving shaft, means to transmit the rotation of said driving shaft tosaid gear, a bearing for said driving shaft in said casmg, means to transmit the endwise thrusts of said driving shaft in both directions through said bearing to said cas ing, and a bearing for said driving shaft in said gear, whereby said .gear receives none of the longitudinal thrusts of the'driving shaft, substantiallyas described. i

4 v EDWARD J. GULIGK. Witnesses:

FREDERICK G. GOODWIN, WALTER M. FULLER. 

